Marine-engine governor



"T. JACKSON.

- MARINE ENGINE GOVERNOR.

APPLICATION FILED JUNE II, 1919.

Patented Apr. 25, 1922.

www W M Arr'y.

7 T all whom it may concern im rms ew prion.

THOMAS JAoKsoN, or unwise-AM, Lennon, ENGLAND, ASSIGNOR To ALLAN Ramsay,

or FOLKESTONE, ENGLAND.

MARINE-ENGINEGOVERNOB.

i Specification of Letters Patent.

, Patented- Apr. 25, 1922. im lication-riled June 11, 191.9.Seria1No.303,467.

(GRANTED UNDER THE rRovIsmNs or THE Act: or MARCH 3, 1921," 41 STAT. I,1313.

Be it known'that THOMAS JAoKsoN, subject of the King of Great Britainand Ire.- land, residing at 27 'Mount' Pleasant Road, Lewisham, London,S.'-E;, England, has invented new and useful Improvements inMarine-Engine Governors, (for which I have filed application in GreatBritain, November 17, 1917, Patent No. 120,768,) of which the followingis a specification.

This invention relates to marine engine governors in which a powerdevice operating the throttle valve iscontrolled by an inertia governordriven by the engine itself, orby an anticipatory v governor of thetiltable gravity controlled type having a mobile'body and'adjustablerelative to the ship and controlled by the angular movement of' the shipin a vertical plane while traveling through the water, or by both ofsaid governors. This invention refers more particularlyto the class ofgoverning device described in the specification ofUnited States LettersPatent No. 919713, issued 27th. April 1909, but it must be understoodthat it is applicable to any similar type'ofgovernor in'which a powerdevice, operated by fluid pressure, is adapted'to operate the throttlevalve or other regulating device of the engine.

In order that the invention may be the better understood I will nowproceed to describe the same in relationto the accompanying drawing,reference bei'ng had to the letters and figures marked thereon. Likeletters refer to like partsin the various figures, in which Fig. 1 is ageneral view of the arrangement ofan' inertia governor, an anticipatorygovernor of the tiltable gravity controlled type, a control valve and apower device for operating the throttle valve with a relay devicearranged in connection with the control valve. 7

Fig. 2 is a sectional detail view of cylinder of the relay device, thepiston with its rod being shown in'full.

Fig. 3 is a view of the stem of the control valve with an adjustablelocking collar.

Referring to the drawings, a designates an inertia governor which isoperated from the marine or other engine, I) an anticipatory governorcomprising a valve device for controlling the reverse operations of thepower device d to open tiltable member, a a V and close the steamthrottle of the engine, and e a relay device which is connected with andoperates'the valve in the valve device 0'."

i designates a pipe connection in which a vacuum is maintained, it beingconnected, for example, with the condenser system of the marine or otherengine, so that there Wlll be present in the. pipe c the same vacuum asis-maintained in the condenser.- The easlng- 0 of the valve device isalsoconnected with the pipe 2' as here shown through the pipe 71 andtheinteriorjof the governor Z2 is also connected with the pipe i ashereshown through the pipes 11? and 75 The relay device 6, is also connectedwith the pipe 2' as here shown'throughlthe pipe 11 governor deviceb, andpipes i and 2' and it isalso connected withthe piped, by a pipe 2' inwhich a valve is located and which valve is the top plate 8 of thecylinder 7" will move the piston g-downward and thus movethe valve in"the valve device'c so that the atmosph'eric pressure will be cut-offfrom below the piston in the power devised and the vacuum applied tothat side, and at the same time applyingupper side of the piston of thepowerdevice and thus move it to close the throttle. -Nhen, however, theftiltable' member is returned to itsadjusted position by the mobilemember, the vacuum is cut off from the under side of the piston gwhereupon the spring y will return the piston g to the position shown(Fig. 2) and the valve in the valve device 0 will be returned to itsoriginal positionto .reverse the connections above described; and againhave the power device d The return of the piston g by the spring j issecured by be effective in the relay device 6,

atmospheric'pressure to the open the throttle. V a

reason of the fact that ,atmospheric pressure reaches the under side ofsectional area which is regulated by the screw 70.

The cylinder f is fitted with an ad ust-'- able valve is by which acertain amount of leak to atmosphere or bye-pass from the bottom to thetop of the piston 9 can beeffected sothat in the event of the operationof the inertia governor: a, or the anticipa f tory governor Z), being ofmerely momentary effect, the relay device a is not completely operatedand the throttle valve position is not interfered with. The inertiagovernor a shown in the drawing comprises an arm carrying a weightadapted to be oscillated increase beyond the predetermined speed occursthen the arm carrying the weight moves relatively to-the lever therebyputting the relay device 3 in communication with the vacuum. 7 j VQuitejapart fromthe saving of wear and tear and the useless expenditureof energy, the objectionable feature vof hunting between the devicegoverning the operation of the engine and the operation of the engineitself, is entirely avoided.

It will be recognized that only one relay device 6 needbe used when bothan inertia and an anticipatory governor are connected, as shown in thedrawing, as such relay device is common to the two;

It has been suggested in the past thaton excessive speed being attainedby the engine, the control valve '0 of the power device should be lockedwhen such extreme conditions have obtained, necessitating the unlockingofthe locking devicevby hand. In order to make this provision moreuseful the locking device is made adjustable so that the lockingoperation can be adjusted to take place at any predetermined speeddesired. This is effected byscrewing the engaging collar Z on the upperend of the spindle m of the control valve 0 and when adjusted by fixingit-rigidlyin position by 'a lock nut n so as to engage the springdeengines, comprising a power device operated in reverse directions byatmospheric pres sure to open and close a throttle; a valve device forcontrolling the operation of the power device; a relay device forcontrolling theoperation of the valve device; said device being operatedin'one direction by atmospheric pressure; means for maintaining avacuum; anda governor device for applying the vacuum to the relay devicewhereby it may be operated by atmospheric pressure to move the saidvalve device. v

' 2. Governing apparatus for marine engines comprising apower devicefor, the throttle which is operated by atmospheric pressure in itscontrol of the throttle; means for maintaininga vacuum; a valve devicefor controlling the application of j the vacuum to either side of thepower device; a' second power devicefor operating the valve device andalso ope-rated :in-onedir rection by atmospheric pressure; and a devicefor controlling the application of the vacuum to the second powerdevice, said device comprising a tiltable member'movable in accordancewith the pitch of a ship above a predeterminedamount. t

3. Governing'apparatus for marine'engines comprising afpower device forthe throttle which is operated by atmospheric pressure in its control ofthethro't'tle; means for maintaining a vacuum a valve device forcontrolling V the application of the vacuum to either side of the powerdevice; a second power device for operatingthe valve device and alsooperated ino'ne dire'ction by atmospheric pressure; and an inertiadevice operated from the engine for controlling the application of'thevacuum to when the engine Y the second power I device exceeds apredetermined speed.

a In testimony whereofl have signed my name to this specification in thepresence of two subscribing witnesses, V

THOMAS "JACKSON.

Witnesses:

DORIS Hiroriooox, OLIVE Wnsr.

